均時差(e) = RST-MST (國外是稱 LAT-LMT)
RST = Real Sun Time (真太陽時)
MST = Mean Sun Time
LAT = Local Apparent Time
LMT = Local Mean Time

均時差每年都不同，時時刻刻都在變，
簡單計算結果如下(based on GMT)，應該可以精確到千分之一秒：
各位手上如果有類似的校正軟體，可以拿出來比對一下
因為我也不知道是不是真的那麼精確

1/1 e = -0:3:17.23078735598847
1/2 e = -0:3:45.41884038705578
1/3 e = -0:4:13.283667245232209
1/4 e = -0:4:40.799040913639146
1/5 e = -0:5:7.938575482303403
1/6 e = -0:5:34.675347127063105
1/7 e = -0:6:0.981951981138991
1/8 e = -0:6:26.830545093835152
1/9 e = -0:6:52.19300067284172
1/10 e = -0:7:17.041133722314044
1/11 e = -0:7:41.346960369069166
1/12 e = -0:8:5.082977071324422
1/13 e = -0:8:28.22244063879225
1/14 e = -0:8:50.739632278100544
1/15 e = -0:9:12.61008871179456
1/16 e = -0:9:33.81078353059365
1/17 e = -0:9:54.32024809856557
1/18 e = -0:10:14.118635380691558
1/19 e = -0:10:33.18774400823269
1/20 e = -0:10:51.511023924740584
1/21 e = -0:11:9.073580052800132
1/22 e = -0:11:25.862186563385983
1/23 e = -0:11:41.865325166386356
1/24 e = -0:11:57.073257510396616
1/25 e = -0:12:11.478126410352054
1/26 e = -0:12:25.07406006920963
1/27 e = -0:12:37.857241398442056
1/28 e = -0:12:49.82590308778981
1/29 e = -0:13:0.9802096634667734
1/30 e = -0:13:11.321992764928943
1/31 e = -0:13:20.85433428935186

2/1 e = -0:13:29.581049601638476
2/2 e = -0:13:37.506177850696076
2/3 e = -0:13:44.633593806161116
2/4 e = -0:13:50.96680735135134
2/5 e = -0:13:56.50894782741499
2/6 e = -0:14:1.2628816268626153
2/7 e = -0:14:5.2313974223034165
2/8 e = -0:14:8.417405183331645
2/9 e = -0:14:10.82411757601232
2/10 e = -0:14:12.45520421549383
2/11 e = -0:14:13.314922908357403
2/12 e = -0:14:13.408234012390494
2/13 e = -0:14:12.7408979934944
2/14 e = -0:14:11.31955126635603
2/15 e = -0:14:9.151757371941933
2/16 e = -0:14:6.246036318921249
2/17 e = -0:14:2.6118778618319993
2/18 e = -0:13:58.259744131832925
2/19 e = -0:13:53.201068945386396
2/20 e = -0:13:47.44826699185513
2/21 e = -0:13:41.014769241273825
2/22 e = -0:13:33.9150945708343
2/23 e = -0:13:26.164954240139302
2/24 e = -0:13:17.781372669692246
2/25 e = -0:13:8.782794988887872
2/26 e = -0:12:59.189132395122215
2/27 e = -0:12:49.021675504504856
2/28 e = -0:12:38.302811499584095


3/1 e = -0:12:27.05553998209325
3/2 e = -0:12:15.30287751650576
3/3 e = -0:12:3.067306456027943
3/4 e = -0:11:50.37040633234948
3/5 e = -0:11:37.232720760052764
3/6 e = -0:11:23.673821927936842
3/7 e = -0:11:9.71248754111457
3/8 e = -0:10:55.36690710392122
3/9 e = -0:10:40.65486449551372
3/10 e = -0:10:25.593877648352645
3/11 e = -0:10:10.201299041737002
3/12 e = -0:9:54.49438922507852
3/13 e = -0:9:38.49037454259815
3/14 e = -0:9:22.206496591957254
3/15 e = -0:9:5.660058185326307
3/16 e = -0:8:48.86846829933347
3/17 e = -0:8:31.849286089495763
3/18 e = -0:8:14.620262977237068
3/19 e = -0:7:57.19938375141737
3/20 e = -0:7:39.60491176239884
3/21 e = -0:7:21.855446998974912
3/22 e = -0:7:3.9700074354504977
3/23 e = -0:6:45.96814310637001
3/24 e = -0:6:27.870086805428453
3/25 e = -0:6:9.696930040881853
3/26 e = -0:5:51.47078476925344
3/27 e = -0:5:33.21485837810087
3/28 e = -0:5:14.95335499097564
3/29 e = -0:4:56.71114929742089
3/30 e = -0:4:38.51326448139844
3/31 e = -0:4:20.38428138337622


4/1 e = -0:4:2.3478431209423434
4/2 e = -0:3:44.426367687056
4/3 e = -0:3:26.640980876704845
4/4 e = -0:3:9.01160407751834
4/5 e = -0:2:51.55711100420834
4/6 e = -0:2:34.29548947459352
4/7 e = -0:2:17.24397567404597
4/8 e = -0:2:0.4191499857324743
4/9 e = -0:1:43.83699528140369
4/10 e = -0:1:27.51292637975895
4/11 e = -0:1:11.461804336022396
4/12 e = -0:0:55.6979490030244
4/13 e = -0:0:40.235158588620834
4/14 e = -0:0:25.08674031062128
4/15 e = -0:0:10.265554835391415
4/16 e = 0:0:4.215922642888472
4/17 e = 0:0:18.34552293163142
4/18 e = 0:0:32.111284972693284
4/19 e = 0:0:45.501338834756105
4/20 e = 0:0:58.50376541632615
4/21 e = 0:1:11.106427920749411
4/22 e = 0:1:23.29677917085519
4/23 e = 0:1:35.06167045856273
4/24 e = 0:1:46.38721571529459
4/25 e = 0:1:57.2587834732758
4/26 e = 0:2:7.661177589011459
4/27 e = 0:2:17.57901491661869
4/28 e = 0:2:26.997230848442086
4/29 e = 0:2:35.901587423350065
4/30 e = 0:2:44.27906530469048


5/1 e = 0:2:52.1180851462168
5/2 e = 0:2:59.408576068676695
5/3 e = 0:3:6.141944114087892
5/4 e = 0:3:12.310990325227067
5/5 e = 0:3:17.909813453070456
5/6 e = 0:3:22.933723355472495
5/7 e = 0:3:27.379183859106917
5/8 e = 0:3:31.2437909170649
5/9 e = 0:3:34.52627770783238
5/10 e = 0:3:37.22653210908905
5/11 e = 0:3:39.34561395966742
5/12 e = 0:3:40.885761453114384
5/13 e = 0:3:41.850373549159514
5/14 e = 0:3:42.24395333106713
5/15 e = 0:3:42.072001733949975
5/16 e = 0:3:41.340860700152035
5/17 e = 0:3:40.057513602860126
5/18 e = 0:3:38.22935573870839
5/19 e = 0:3:35.863950503630804
5/20 e = 0:3:32.96879011423246
5/21 e = 0:3:29.55108485423355
5/22 e = 0:3:25.617612083146923
5/23 e = 0:3:21.174663066199173
5/24 e = 0:3:16.22812307802633
5/25 e = 0:3:10.783697748397598
5/26 e = 0:3:4.847257498504405
5/27 e = 0:2:58.42523246430119
5/28 e = 0:2:51.524978214602044
5/29 e = 0:2:44.155055201822506
5/30 e = 0:2:36.32540275835254
5/31 e = 0:2:28.047416252466064


6/1 e = 0:2:19.333946512679177
6/2 e = 0:2:10.199244381651598
6/3 e = 0:2:0.6588779199819328
6/4 e = 0:1:50.72965071393355
6/5 e = 0:1:40.429541328476276
6/6 e = 0:1:29.7776705140177
6/7 e = 0:1:18.794293148957877
6/8 e = 0:1:7.500807753845051
6/9 e = 0:0:55.91977179497917
6/10 e = 0:0:44.07490215583949
6/11 e = 0:0:31.991031218831267
6/12 e = 0:0:19.693987537038993
6/13 e = 0:0:7.21038037440394
6/14 e = -0:0:5.4327114987336245
6/15 e = -0:0:18.208119990713385
6/16 e = -0:0:31.088988164483453
6/17 e = -0:0:44.049135143509375
6/18 e = -0:0:57.06334025047455
6/19 e = -0:1:10.107521876957435
6/20 e = -0:1:23.158805089606176
6/21 e = -0:1:36.1954827118325
6/22 e = -0:1:49.19688150798265
6/23 e = -0:2:2.1431536171394328
6/24 e = -0:2:15.015022937018356
6/25 e = -0:2:27.79352161465343
6/26 e = -0:2:40.459749735773585
6/27 e = -0:2:52.99468322676603
6/28 e = -0:3:5.379044231776788
6/29 e = -0:3:17.593237109267676
6/30 e = -0:3:29.617342983397066


7/1 e = -0:3:41.43115774285437
7/2 e = -0:3:53.014253555120405
7/3 e = -0:4:4.346042681522704
7/4 e = -0:4:15.4058246798877
7/5 e = -0:4:26.172804080260903
7/6 e = -0:4:36.62607432972891
7/7 e = -0:4:46.7445732838724
7/8 e = -0:4:56.50702572820592
7/9 e = -0:5:5.8919019928180205
7/10 e = -0:5:14.87743792962192
7/11 e = -0:5:23.441769275041224
7/12 e = -0:5:31.563216183208223
7/13 e = -0:5:39.22070686917783
7/14 e = -0:5:46.394272488660135
7/15 e = -0:5:53.06551217029215
7/16 e = -0:5:59.21793795605487
7/17 e = -0:6:4.837154834513111
7/18 e = -0:6:9.910882308417968
7/19 e = -0:6:14.428856608224176
7/20 e = -0:6:18.382660402608053
7/21 e = -0:6:21.765517196754445
7/22 e = -0:6:24.572072442774697
7/23 e = -0:6:26.79817256867409
7/24 e = -0:6:28.440650526922635
7/25 e = -0:6:29.497128663742895
7/26 e = -0:6:29.965849985164823
7/27 e = -0:6:29.845544770510113
7/28 e = -0:6:29.13533441396794
7/29 e = -0:6:27.834671331315857
7/30 e = -0:6:25.943310389416183
7/31 e = -0:6:23.46130043389172


8/1 e = -0:6:20.388977296211124
8/2 e = -0:6:16.726939223076442
8/3 e = -0:6:12.47599309883304
8/4 e = -0:6:7.637068259437054
8/5 e = -0:6:2.211100198624134
8/6 e = -0:5:56.19889631710521
8/7 e = -0:5:49.601019057363374
8/8 e = -0:5:42.41775088952181
8/9 e = -0:5:34.64921440053786
8/10 e = -0:5:26.295685684135606
8/11 e = -0:5:17.358065757061922
8/12 e = -0:5:7.83840174740817
8/13 e = -0:4:57.74032377179083
8/14 e = -0:4:47.06930159198237
8/15 e = -0:4:35.83270026065293
8/16 e = -0:4:24.03967946105695
8/17 e = -0:4:11.701006980451893
8/18 e = -0:3:58.82884545599612
8/19 e = -0:3:45.43654457671437
8/20 e = -0:3:31.53844879737335
8/21 e = -0:3:17.149720945258224
8/22 e = -0:3:2.2861810460108245
8/23 e = -0:2:46.96416025934923
8/24 e = -0:2:31.200369633702394
8/25 e = -0:2:15.011784508196797
8/26 e = -0:1:58.415548110619966
8/27 e = -0:1:41.428898194376416
8/28 e = -0:1:24.069115174916078
8/29 e = -0:1:6.35348225710004
8/30 e = -0:0:48.299243967712755
8/31 e = -0:0:29.92355117667103

9/1 e = -0:0:11.243383631567667
9/2 e = 0:0:7.724557725282464
9/3 e = 0:0:26.963991648340198
9/4 e = 0:0:46.45921688518229
9/5 e = 0:1:6.195249236197937
9/6 e = 0:1:26.157866222370103
9/7 e = 0:1:46.33348821344953
9/8 e = 0:2:6.708863270155234
9/9 e = 0:2:27.27059589475175
9/10 e = 0:2:48.00463198243051
9/11 e = 0:3:8.895836021974901
9/12 e = 0:3:29.927752645894543
9/13 e = 0:3:51.08256448732391
9/14 e = 0:4:12.341194752334559
9/15 e = 0:4:33.68348380914546
9/16 e = 0:4:55.08838383659622
9/17 e = 0:5:16.53414016639095
9/18 e = 0:5:37.998447408649554
9/19 e = 0:5:59.45858035603578
9/20 e = 0:6:20.891505927934357
9/21 e = 0:6:42.273983825307425
9/22 e = 0:7:3.582660823749393
9/23 e = 0:7:24.79415941488247
9/24 e = 0:7:45.885159065114856
9/25 e = 0:8:6.832468766510935
9/26 e = 0:8:27.61309150647776
9/27 e = 0:8:48.20428361521419
9/28 e = 0:9:8.583614876397405
9/29 e = 0:9:28.729038755404872
9/30 e = 0:9:48.61898407500121


10/1 e = 0:10:8.232477056067182
10/2 e = 0:10:27.549294368163935
10/3 e = 0:10:46.55013377789146
10/4 e = 0:11:5.216769433277584
10/5 e = 0:11:23.53213641300499
10/6 e = 0:11:41.48027565905522
10/7 e = 0:11:59.04608767787977
10/8 e = 0:12:16.21490446188556
10/9 e = 0:12:32.97197108482113
10/10 e = 0:12:49.3019767746091
10/11 e = 0:13:5.188753180464225
10/12 e = 0:13:20.615182433934933
10/13 e = 0:13:35.563280702058364
10/14 e = 0:13:50.01438149018213
10/15 e = 0:14:3.9493431927166966
10/16 e = 0:14:17.348732872146684
10/17 e = 0:14:30.192971374713125
10/18 e = 0:14:42.462446461263426
10/19 e = 0:14:54.13760601735703
10/20 e = 0:15:5.199040217239599
10/21 e = 0:15:15.627559142994976
10/22 e = 0:15:25.404272385489897
10/23 e = 0:15:34.51067522575613
10/24 e = 0:15:42.92874077304532
10/25 e = 0:15:50.64101365228453
10/26 e = 0:15:57.63070291198801
10/27 e = 0:16:3.881777904689443
10/28 e = 0:16:9.37907537864703
10/29 e = 0:16:14.108426324537504
10/30 e = 0:16:18.056809228050952
10/31 e = 0:16:21.212533783391336

11/1 e = 0:16:23.565452052298497
11/2 e = 0:16:25.107175112671243
11/3 e = 0:16:25.831240327042906
11/4 e = 0:16:25.73314297741966
11/5 e = 0:16:24.810149600089062
11/6 e = 0:16:23.06087479601956
11/7 e = 0:16:20.48470920121872
11/8 e = 0:16:17.081265672754853
11/9 e = 0:16:12.850003927187572
11/10 e = 0:16:7.79010443176503
11/11 e = 0:16:1.900553520235917
11/12 e = 0:15:55.18033898831163
11/13 e = 0:15:47.62866039346136
11/14 e = 0:15:39.24510364569869
11/15 e = 0:15:30.029771472368445
11/16 e = 0:15:19.983377896301242
11/17 e = 0:15:9.107314907387263
11/18 e = 0:14:57.4037005480567
11/19 e = 0:14:44.87542278057855
11/20 e = 0:14:31.52619386203707
11/21 e = 0:14:17.36062207435225
11/22 e = 0:14:2.3842990707636247
11/23 e = 0:13:46.603898992625545
11/24 e = 0:13:30.02728794275299
11/25 e = 0:13:12.663643955720545
11/26 e = 0:12:54.52358807875498
11/27 e = 0:12:35.61932979070207
11/28 e = 0:12:15.964833769130564
11/29 e = 0:11:55.576013888962734
11/30 e = 0:11:34.470948375246735


12/1 e = 0:11:12.670085079730597
12/2 e = 0:10:50.19637199772205
12/3 e = 0:10:27.075222944140478
12/4 e = 0:10:3.3342426205717857
12/5 e = 0:9:39.00270920131334
12/6 e = 0:9:14.110918884780403
12/7 e = 0:8:48.68956590336438
12/8 e = 0:8:22.769309247264573
12/9 e = 0:7:56.380579431142905
12/10 e = 0:7:29.553576401744976
12/11 e = 0:7:2.3183637139163693
12/12 e = 0:6:34.7049786771459
12/13 e = 0:6:6.7435160202330735
12/14 e = 0:5:38.464170368424675
12/15 e = 0:5:9.897235713228838
12/16 e = 0:4:41.07306900398726
12/17 e = 0:4:12.022033976450128
12/18 e = 0:3:42.77444491706774
12/19 e = 0:3:13.360526252695335
12/20 e = 0:2:43.81039844925456
12/21 e = 0:2:14.15409807107153
12/22 e = 0:1:44.42163708297812
12/23 e = 0:1:14.64310004172603
12/24 e = 0:0:44.84877079369198
12/25 e = 0:0:15.069278328874134
12/26 e = -0:0:14.664245770240996
12/27 e = -0:0:44.320004344754125
12/28 e = -0:1:13.865376551379995
12/29 e = -0:1:43.26678504958181
12/30 e = -0:2:12.489622755497294
12/31 e = -0:2:41.4982869987125