getUpcomingNewMoon() and getUpcomingFullMoon() are often incorrect when close to the event

[willem-syt]

Hi,
First of all, thank you for this great library.

I did notice that when you calculate e.g. New Moon for 2024-01-15 12:00:00 (UTC) the result will be in the past (i.e. 2024-01-11 11:58:48).
Similarly a Full Moon calculation for 2024-01-24 12:00:00 gives 2024-02-24 12:31:24 (it should be 2024-01-25 17:55:01):

2024-01-15 12:00:00 Full Moon 2024-01-25 17:55:01
2024-01-16 12:00:00 Full Moon 2024-01-25 17:55:01
2024-01-17 12:00:00 Full Moon 2024-01-25 17:55:01
2024-01-18 12:00:00 Full Moon 2024-01-25 17:55:01
2024-01-19 12:00:00 Full Moon 2024-01-25 17:55:01
2024-01-20 12:00:00 Full Moon 2024-02-24 12:31:24
2024-01-21 12:00:00 Full Moon 2024-02-24 12:31:24
2024-01-22 12:00:00 Full Moon 2024-02-24 12:31:24
2024-01-23 12:00:00 Full Moon 2024-02-24 12:31:24
2024-01-24 12:00:00 Full Moon 2024-02-24 12:31:24
2024-01-25 12:00:00 Full Moon 2024-02-24 12:31:24
2024-01-26 12:00:00 Full Moon 2024-02-24 12:31:24

At this moment I check the results and re-calculate with a different date if needed.

Next to that it would be nice to add the Age (in days) for the Moon (i.e. 0 at New Moon and ~14.7 at Full Moon). At the moment I calculate this by determining the previous New Moon event and subtracting it from the ToI.

Thanks!