Tabulka desetidenních efemerid Slunce a Země

datum	0 h TČ			0 h SČ
	λ	Δ	ρ	rovnice ekvinokcií
	λ	Δ	ρ		+5 dní
	°	AU	' "	s	s
1 1.	280.819	0.98335	16 17.5	+0.012	+0.019
1 11.	291.011	0.98343	16 17.4	+0.032	+0.074
1 21.	301.191	0.98409	16 16.7	+0.057	+0.071
1 31.	311.359	0.98524	16 15.6	+0.099	+0.078
2 10.	321.496	0.98676	16 14.1	+0.111	+0.102
2 20.	331.595	0.98875	16 12.1	+0.078	+0.101
3 2.	341.655	0.99108	16 9.8	+0.081	+0.079
3 12.	351.663	0.99358	16 7.4	+0.091	+0.051
3 22.	1.614	0.99635	16 4.7	+0.047	+0.055
4 1.	11.516	0.99923	16 1.9	+0.022	+0.049
4 11.	21.358	1.00203	15 59.2	+0.027	+0.003
4 21.	31.142	1.00485	15 56.5	+0.025	+0.006
5 1.	40.879	1.00751	15 54.0	+0.019	+0.039
5 11.	50.564	1.00987	15 51.8	+0.014	+0.032
5 21.	60.203	1.01203	15 49.8	+0.051	+0.039
5 31.	69.811	1.01382	15 48.1	+0.090	+0.086
6 10.	79.385	1.01514	15 46.8	+0.087	+0.128
6 20.	88.936	1.01612	15 45.9	+0.122	+0.152
6 30.	98.478	1.01661	15 45.5	+0.184	+0.170
7 10.	108.012	1.01656	15 45.5	+0.200	+0.217
7 20.	117.550	1.01614	15 45.9	+0.209	+0.255
7 30.	127.105	1.01521	15 46.8	+0.242	+0.239
8 9.	136.678	1.01380	15 48.1	+0.267	+0.243
8 19.	146.280	1.01209	15 49.7	+0.262	+0.269
8 29.	155.924	1.00997	15 51.7	+0.236	+0.248
9 8.	165.606	1.00751	15 54.0	+0.241	+0.218
9 18.	175.338	1.00493	15 56.5	+0.242	+0.208
9 28.	185.126	1.00213	15 59.1	+0.193	+0.206
10 8.	194.965	0.99924	16 1.9	+0.171	+0.191
10 18.	204.862	0.99644	16 4.6	+0.188	+0.158
10 28.	214.818	0.99368	16 7.3	+0.175	+0.171
11 7.	224.822	0.99108	16 9.8	+0.165	+0.205
11 17.	234.878	0.98883	16 12.0	+0.185	+0.195
11 27.	244.981	0.98684	16 14.0	+0.225	+0.212
12 7.	255.114	0.98523	16 15.6	+0.261	+0.277
12 17.	265.278	0.98416	16 16.7	+0.273	+0.313
12 27.	275.464	0.98349	16 17.3	+0.322	+0.332

λ ~ geocentrická délka Slunce pro J2012
Δ ~ vzdálenost Země - Slunce;
ρ ~ zdánlivý geocentrický poloměr Slunce;

Redukce délky z ep. J2025.0 na J2000.0 je -0.349. Astronomický soumrak - kdy je Slunce méně než 18 pod obzorem - trvá na +50 rovnoběžce od 31. 5. do 10. 7. po celou noc.