Ramadhaan & Fasting

Q: Is it obligatory to floss after eating when a person is fasting? Sometimes food can get stuck and I can't feel it there.

Q: I’m fasting. I try to follow the most accurate sunset times. Of course these different sites and apps make estimates of what sunset time is. For e.g, today one would said sunset is at 3:53, another two said 3:54 and another site said 3:55. I naturally would follow the latest one as a precaution, but nevertheless, would it be permissible to follow the earliest time?

Q:

1. Can I lick the skin outside of my lipline during fasting?

2. I was told that because spittle can unintentionally go on my lips when talking, I can lick it. Does this apply to when the spittle lands outside of my lips?

Q: I'm fasting today and I felt something come up my throat. The regurgatation felt quite full/big, however, it didn't reach my tongue. I swallowed it. Is this fine?

Q: Frequently, when going in sajdah, the fabric of my headscarf or the prayer mat ends up on my lips or in my mouth. This is an issue when I’m fasting. I don’t know if anything like microfibers or small hairs have entered my mouth. Today this happened during salah but I couldn’t feel anything in my mouth after it occurred so I assumed I could swallow as usual.

1. Was this correct?

2. If this happens during salah, and I feel something in my mouth after, do I have to spit?

3. If this happens in salah or near the end of it, do I have to check in a mirror afterwards to see if anything inside my mouth?

Q: I wasnt sure if lip balm went into my mouth during fasting so I closed my lips and licked the inside of my mouth to try and taste it. I believed I swallowed in attempt to figure this out. I only realised after that I shouldn't have swallowed - although, I didnt taste any lip balm so, is mt fast valid?

Q: I miss 7 fasts every year in Ramadan due to periods. I did keep some qaza fasts but I don't remember how many. I had the intention to keep all but my health was always weak. Now also, I have excess bleeding and weakness due to which I dont think I can keep fasts. I calculated the missed fasts to be 7×30 years = 210 fasts approximately

1. How much fidya or kaffara do I have to give?

2. Can I give all at once?

3. To whom can I give it? Can I give to Rohingya refugees?

Q: The moisture left on my lips from washing my face/mouth during wudu, is this safe to be licked and ingested when fasting? Usually after I wiped my lips in wudu, I have to spit and then let my lips air dry and/or wipe with a tissue until dry. Today after wudu, the majority of my lips were dry but in the corner of my lips I felt a coolness, which may indicate that there is still moisture from wudu left. I licked that area. So now I’m just wondering if my fast is valid. 

Q: Does the inhaling of the fragrant mist/steam that is emitted by an aroma diffuser break the fast?

Q: I have a question regarding kaffarah for accidentally killing someone. I read a recent post of yours saying that you have to fast for two months consecutively.

My question is, does one start fasting from the first of the month (so, assuming we follow the hijri calendar, fasting could be for 58-60 days if there are 29/30 days in the month) or can one start anytime and fast for 60 days?