How do I greet a group of people in different time zones?


Let's say a group of friends from different countries are in a Skype call. For
me, perhaps it's morning, while others are in midday or nighttime hours in
their respective countries.

When in a one-on-one chat, I'm aware it's best to use the correct greeting for
your recipient's time zone. However, this quickly gets more complicated when
you have multiple recipients in varying time zones and times of day.

As someone joining this theoretical group conversation, how can I say hello
without sounding strange to anyone? Is it best to use something like こんにちは?
Should I use the greeting for my own time zone? Or, is there some other way I
should greet the group?




Well, as for the phrases I cited in the comment:

>   1. よろしくおねがいします* "Thank you for everything in advance." / よろしく** / よろ***
>   2. おつかれさまです* "Thank you for everything." / おつかれ** / おつ***
>   3. はじめまして* "Nice to meet you."
>   4. どうも** "Hi" (but with slightly inactive impression) / ども***
>

  * items marked an * are the polite full wordings. 
  * ** are more colloquial lighter versions commonly used among friends, colleagues, etc.
  * *** are kind of internet slang or something similar.

All examples except #3 are highly culture-dependent and hard-to-translate
expressions, as you know. I believe you are going to learn their usages
through gaining experiences in conversation.

However when talking to a new joiner to a group, I would recommend saying
いらっしゃい "Welcome" for first place candidate, it seems fairly versatile and very
suitable for expressing your welcoming attitude.

